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Finding the Fourth Proportional to 88,781, 122,517.78 and 49,039.56

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Solution

The fourth proportional to 88,781, 122,517.78 and 49,039.56 is: 67,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,781 : 122,517.78 = 49,039.56 : x
  2. Step 2: Convert to fraction form
    88,781/122,517.78 = 49,039.56/x
  3. Step 3: Cross multiply
    88,781x = 122,517.78 × 49,039.56
  4. Step 4: Simplify right side
    88,781x = 6,008,218,023.38
  5. Step 5: Solve for x
    x = 6,008,218,023.38/88,781
  6. Step 6: Final answer
    x = 67,674.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.